CN104343498A - Special exhaust silencer for road roller - Google Patents

Special exhaust silencer for road roller Download PDF

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Publication number
CN104343498A
CN104343498A CN201410532373.3A CN201410532373A CN104343498A CN 104343498 A CN104343498 A CN 104343498A CN 201410532373 A CN201410532373 A CN 201410532373A CN 104343498 A CN104343498 A CN 104343498A
Authority
CN
China
Prior art keywords
housing
cap
anger
diffusing tube
silencer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410532373.3A
Other languages
Chinese (zh)
Inventor
李粉竹
袁军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHUCHENG HAIDEWEI MACHINE CO Ltd
Original Assignee
ZHUCHENG HAIDEWEI MACHINE CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZHUCHENG HAIDEWEI MACHINE CO Ltd filed Critical ZHUCHENG HAIDEWEI MACHINE CO Ltd
Priority to CN201410532373.3A priority Critical patent/CN104343498A/en
Publication of CN104343498A publication Critical patent/CN104343498A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a special exhaust silencer for a road roller. The exhaust silencer is characterized in that the lower end and upper end of a housing are closed through a lower end cover and an upper end cover respectively; the lower part of the housing is spaced by a partition plate; a gas inlet diffusion pipe is transversely arranged in the housing between the partition plate and the lower end cover; two gas outlet diffusion pipes are longitudinally arranged in the housing between the partition plate and the upper end cover and are spaced through the partition plate. Through the arrangement, the resistance of a perforated pipe is reduced, the vibration friction silencing effect of the perforated pipe is fully utilized, and the silencing effect of the silencer is improved; the gas outlet diffusion pipes are adopted on the basis of adopting a sound absorption material for reducing high-frequency noise, so that the back pressure of the silencer is reduced; a very good effect is obtained in a silencer improvement project of a main engine plant.

Description

The special exhaust silencer of a kind of road roller
Technical field
The invention belongs to engine exhaust muffler field, particularly relate to the special exhaust silencer of a kind of road roller.
Background technique
At present, existing exhaust exhaust silencer mainly adopts the resistance exhaust silencer structure of pipeline section expansion and cross-sectional constriction, utilize sound wave in the change of abrupt change of cross-section place due to acoustic reactance, some sound wave goes back to sound source reflects, and not by the outlet of silencing apparatus, thus reach the object of noise elimination, but the contradiction that this silencing apparatus exists at present is when using on heavy road roller, because size is restricted, silencing apparatus diameter can not be too large, for obtaining larger divergence ratio, higher sound deadening capacity, outlet pipe and interpolation pipe diameter can not be too large, thus cause airspeed high, muffler back pressure is high, and cause silencing apparatus soundproof effect also poor because airspeed is high.
Summary of the invention
The object of the present invention is to provide a kind of special exhaust silencer of road roller utilizing two steam outlet pipes and perforated pipe to reduce back pressure.
To achieve these goals, the lower end of inventive shell and upper end are closed respectively by lower end cap and upper end cap, in the inner side of lower end cap and upper end cap, sound-absorbing material is covered with respectively with on the inwall of housing, dividing plate is by the interval, bottom of housing, laterally air inlet diffusing tube is provided with in housing between dividing plate and lower end cap, one end of described air inlet diffusing tube realizes closing by the inwall of housing, longitudinally be provided with two in housing between dividing plate and upper end cap to give vent to anger diffusing tube, the intermediate portion of described diffusing tube of giving vent to anger is by space bar interval, the upper and lower of space bar give vent to anger diffusing tube outer wall on be respectively equipped with air inlet mesh and give vent to anger mesh.
By above setting, the present invention takes full advantage of the reduction of perforated pipe resistance and the vibration friction noise elimination effect of perforated pipe, back pressure and soundproof effect fall, improve the soundproof effect of silencing apparatus, adopt sound-absorbing material to reduce on the basis of high-frequency noise simultaneously, adopt two diffusing tubes of giving vent to anger, the back pressure reducing silencing apparatus, in the silencing apparatus improved project of main engine factory, obtains good effect.
Accompanying drawing explanation
Now the present invention will be further described by reference to the accompanying drawings.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
In figure: 1, housing, 2, lower end cap, 3, upper end cap, 4, sound-absorbing material, 5, dividing plate, 6, air inlet diffusing tube, 7, diffusing tube of giving vent to anger, 8, space bar, 9, air inlet mesh, 10, mesh of giving vent to anger.
Embodiment
As Fig. 1, shown in 2, the lower end of inventive shell 1 and upper end are closed respectively by lower end cap 2 and upper end cap 3, in the inner side of lower end cap 2 and upper end cap 3, sound-absorbing material 4 is covered with respectively with on the inwall of housing 1, dividing plate 5 is by the interval, bottom of housing 1, laterally air inlet diffusing tube 6 is provided with in housing 1 between dividing plate 5 and lower end cap 2, one end of described air inlet diffusing tube 6 realizes closing by the inwall of housing 1, longitudinally be provided with two in housing 1 between dividing plate 5 and upper end cap 3 to give vent to anger diffusing tube 7, the intermediate portion of described diffusing tube 7 of giving vent to anger is by space bar 8 interval, the upper and lower of space bar 8 give vent to anger diffusing tube 7 outer wall on be respectively equipped with air inlet mesh 9 and mesh 10 of giving vent to anger.
By above setting, the noise of discharging from road roller engine exhaust pipe enters between dividing plate 5 and lower end cap 2 from air inlet diffusing tube 6 of the present invention, realize one-level expansion, eliminate partial noise, vibrated the sound absorption of friction and sound-absorbing material 4 by the vent on air inlet diffusing tube 6 simultaneously, eliminate part high-frequency noise, noise is entering from the lower end of diffusing tube 7 of giving vent to anger diffusing tube 7 of giving vent to anger, the inside of housing 1 is entered through mesh 10 of giving vent to anger, realize secondary expansion, eliminate part Middle and low frequency noise, simultaneously by the vibration friction of mesh 10 of giving vent to anger and the sound absorption of sound-absorbing material 4, eliminate part high-frequency noise, noise enters from air inlet mesh 9 diffusing tube 7 of giving vent to anger again, partial noise is eliminated by the vibration friction of air inlet mesh 9, owing to giving vent to anger, diffusing tube 7 adopts two, exhaust back pressure is also reduced while reduction noise.

Claims (1)

1. the special exhaust silencer of road roller, it is characterized in that: the lower end of housing and upper end are closed respectively by lower end cap and upper end cap, in the inner side of lower end cap and upper end cap, sound-absorbing material is covered with respectively with on the inwall of housing, dividing plate is by the interval, bottom of housing, laterally air inlet diffusing tube is provided with in housing between dividing plate and lower end cap, one end of described air inlet diffusing tube realizes closing by the inwall of housing, longitudinally be provided with two in housing between dividing plate and upper end cap to give vent to anger diffusing tube, the intermediate portion of described diffusing tube of giving vent to anger is by space bar interval, the upper and lower of space bar give vent to anger diffusing tube outer wall on be respectively equipped with air inlet mesh and give vent to anger mesh.
CN201410532373.3A 2014-10-11 2014-10-11 Special exhaust silencer for road roller Pending CN104343498A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410532373.3A CN104343498A (en) 2014-10-11 2014-10-11 Special exhaust silencer for road roller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410532373.3A CN104343498A (en) 2014-10-11 2014-10-11 Special exhaust silencer for road roller

Publications (1)

Publication Number Publication Date
CN104343498A true CN104343498A (en) 2015-02-11

Family

ID=52499864

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410532373.3A Pending CN104343498A (en) 2014-10-11 2014-10-11 Special exhaust silencer for road roller

Country Status (1)

Country Link
CN (1) CN104343498A (en)

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Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150211

WD01 Invention patent application deemed withdrawn after publication